Active Grille Shutter - Overview
Overview
The active grille shutter system (when equipped) is comprised of the grille shutter assembly and the grille shutter actuator. The active grille shutter system is primarily used to maximize fuel economy by reducing aerodynamic drag on the vehicle. The active grille shutter system is also used to shorten engine warm-up time, increasing engine efficiency and providing heat to the vehicle occupants in a timely manner. The grille shutter actuator receives position commands from the PCM. The active grille shutter system carries out a calibration sequence whenever the engine is started, fully opening and closing the shutters before being positioned in the programmed position as requested by the PCM.
PCM inputs/outputs that may be used for controlling of grille shutters are the:
ECT sensor IAT sensor A/C pressure transducer APP sensor ABS module (through the HS-CAN) AAT (ambient air temperature) sensor TCT (turbo charge temperature) sensor MCT (manifold charge temperature) sensor TOT (transmission oil temperature) sensor Engine cooling fan motor Engine oil temperature
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